*/
    protected CloseableUtil() {
    }

    private static final Logger logger = Logger.getLogger(CloseableUtil.class);

    /**
     * Closes a {@link Closeable}.
     * <p>
     * If an exception is thrown by {@link Closeable#close()}, an error message is logged. The exception is not rethrown. This prevents the original exception from being lost in situations like the following:
     * </p>
     * <pre>

   * If the new value is loaded successfully it will replace the previous value in the cache; if an
   * exception is thrown while refreshing the previous value will remain, <i>and the exception will
   * be logged (using {@link java.util.logging.Logger}) and swallowed</i>.
   *
   * <p>Caches loaded by a {@link CacheLoader} will call {@link CacheLoader#reload} if the cache

 */
package org.codelibs.core.lang;

import org.codelibs.core.exception.InterruptedRuntimeException;
import org.codelibs.core.log.Logger;

/**
 * Utility class for Thread class
 *
 * @author shinsuke
 *
 */
public abstract class ThreadUtil {

    private static final Logger logger = Logger.getLogger(ThreadUtil.class);

    /**
     * Do not instantiate.
     */
    protected ThreadUtil() {
    }

    /**

 *
 * @author higa
 */
public abstract class StatementUtil {

    private static final Logger logger = Logger.getLogger(StatementUtil.class);

    /**
     * Do not instantiate.
     */
    protected StatementUtil() {
    }

    /**
     * Executes the SQL.
     *
     * @param statement
     *            {@link Statement}. Must not be {@literal null}.
     * @param sql

 * @author koichik
 */
public abstract class ZipInputStreamUtil {

    private static final Logger logger = Logger.getLogger(ZipInputStreamUtil.class);

    /**
     * Do not instantiate.
     */
    protected ZipInputStreamUtil() {
    }

    /**
     * A method that wraps the exception handling of {@link ZipInputStream#getNextEntry()}.
     *
     * @param zis

 *
 * <pre>
 *   TestLogHandler handler;
 *
 *   protected void setUp() throws Exception {
 *     super.setUp();
 *     handler = new TestLogHandler();
 *     SomeClass.logger.addHandler(handler);
 *     addTearDown(new TearDown() {
 *       public void tearDown() throws Exception {
 *         SomeClass.logger.removeHandler(handler);
 *       }

 * collected, and this class can detect when the main class loader has been garbage collected and
 * stop itself.
 */
public class Finalizer implements Runnable {

  private static final Logger logger = Logger.getLogger(Finalizer.class.getName());

  /**
   * Starts the Finalizer thread. FinalizableReferenceQueue calls this method reflectively.
   *
   * @param finalizableReferenceClass FinalizableReference.class.

        assertNotNull(logger);

        // Verify logger is of the expected type
        assertTrue(logger instanceof org.apache.logging.log4j.Logger);
    }

    // Test concurrent execution of hook method
    @Test
    public void test_hook_concurrentExecution() throws Exception {
        final FwAssistantDirector assistantDirector = createMockAssistantDirector();
        final int threadCount = 10;

        if (filesToDelete.isEmpty()) {
            LOGGER.warn("No files need to be deleted.");
            return;
        }

        LOGGER.warn("The following changelog files {} be deleted:", dryRun ? "can" : "will");
        LOGGER.warn("");
        filesToDelete.forEach(file -> LOGGER.warn("\t{}", rootDir.relativize(file.toPath())));

        if (dryRun == false) {

  .addInterceptor(logging)
  .build();
```

You can change the log level at any time by calling `setLevel()`.

To log to a custom location, pass a `Logger` instance to the constructor.
```java
HttpLoggingInterceptor logging = new HttpLoggingInterceptor(new Logger() {
  @Override public void log(String message) {
    Timber.tag("OkHttp").d(message);
  }
});
```